Machine for making pasteboard boxes.



` R. HOGFELDT. MACHINE FOR MAKING PASTEBOARD BOXES.

APPLICATION FILED AIB.. I9

PatentedJuIy 4, 1911.

T o c @n ,Ilm

R. HO'GFELDT. MACHINE FOB. MAKING PASTEOARD BOXES. v v APPLIIJATION FILED 11211.19, 1910. 996,856 Patented July 4, 1911.

2 SHEETS-SHEET 2.

RICHARD HGFELDT, or DUSSELDORF, GERMANY.

To all whom 'it may' concern:

Be it known that I, RICHARD HGFELDT, head foreman, a citizen of Germany, resid* ing at Dusseldorf, Brunnenstrasse 1 to 3, in the Provice of Rhineland and State of Prussia, Germany, have invented new and useful Improvements in Machines for Making Pasteboard Boxes, of

1s a specification.

f ,chine for producing boxes from pasteboard b the roller utilizedl for The present inventiondeals ,with ay maor other similar material. Its speeial feature lies in the fact, that two folding devices are provided for turning down the edges of the coating sl of the box. One ofthese folding devices used for turning down the edges outstanding'beyond the inside of the box, carries four slides; these are moved simultaneously but indifferent planes inwardly, beyond the edges ofthe box, doubling back in this way the paper slip.

-A further characteristic of the .machine consists in, that not only an upand downut also a gliding movement is imparted to appressing the paperslip against the box. f

In the accompanying drawings: Figure l -is a side elevation with some parts broken away of my improved machine for making boxes; Figela a plan thereof with the upper parts omitted; Fig. 2 an inner face'view of the first folder; Fig. 3 a similar view of the second folder; Fig. 4 a 'front view of the roller actuating mechanism, and Fig. 5 a Vside View thereof.

The work-pieces 1 already cut out and scored, are placed in sion on a table 2. The work-piece in front, is pressed by meansqof a piston 4 against the plate 5 or the like where it is below a slide 6 connected with a lever 7 and a rod 8. The latter is guided with a roller 9 'in a disk 10 in such a way that temporarily the slide is moved downcomparatively rapidly,

pushing thus the work-piece in front into a frame 11 located underneath. This has just the size to receive the work-piece. But the free space incased thereby only corresponds to the cross section of the box tobe formed.

The frame 11 carries atits outer face resili` ent fingers 12, slightly mutually inclined. Back ofl frame 11, there is fulcrumed at 76 to the machine frame a lever 13, engaging the slot of a cam 14 with a roll slide-block mounted thereon. The lever 13 speeication of Letters Patent. Application led'April 19, 1910.

which the following' ip projecting over the side-walls 'th position in close succes-l MACHINE Fon MAKING PAsTnBoARD Boxes Patented July 4,. i911. serai No. 556,359.

is jointed through the piece with a socket 16, placed on a rod 15 and so adapted that it can turn but not get .displaced independently.therefrom. The rod 15 is mounted to rotate and it has adapted thereto a plate 18, carrying a socket 17 for receiving' the rod, and connected with the frame 11 in such a manner, that the latter must revolve with the rod while this is susceptible of beingshifted therein. Rigidly united with the rod 15 is a piston or core 19, he crossse'ction of which corresponds apereon a spur-wheel 20 wherein the rod can wh revolve independently the spur-wheel 20 is a larger driven spur-wheel 2l which is only this account it only efits revolution the movement of the wheel 2O imparting thus to the latter a full revolution. The slots of t-he disks 10 and 14 are so shaped that immediately after the pushing down of the workpiece by means of the slide 6 the piston 19 is thrust forward. In this'way it turns down reetangularly, when passing the frame, the latter side-walls of the box divided olf by folds. TheA shift of the work-piece by the piston takes place just the amount that the fingers 12 overlap still slightly the edges of the side walls of the box, lying on the piston, holding saine in their position. The workpiece has now its position above the roller 23, pivoted in a lever 22. Under Aassistance of an'articular piece 58, this forms with the arm 59 a bent lever, being mounted to rotate at Gl in a cradle or slide 60 and affected by a spring 62. This spring tends to press the roller upwardl7 and against the box. A rail 72, displaceably mounted at the machine franie and affected by a cani G4, bears with its pin, carrying a roller 70, against the arm 59 holding in .this way under normal conditions the pressing roller 23 in its lowest position. The cradle G0 is suitably and slidably mounted in a rail and it is being connected through the medium of a rodwork and of a bent level' with a cam 63.

When the coating slip has been passed with its fore-end intermediate the pressing roller 23 and the box, the cam 64 moves back and, due to the spring 62, it bears securely moment its single rotation thus being lined medium of an articular 7 be shifted in like manner as in the .frame with the coating slip. During this operation, the spring 62, assisted by the bent lever, admits indeed of an upand downmovement of the roller 23, causes it, however, at the same time to be evenly and se- 'surely pressed against the box. When ,the

. wise a perfect adherence. Now, by the cam 14, afresh feed of material begins, whereby Y the work-piece passes into the folding device. This contrivance is composed essen` tially of a .frame 29a and two pairs of slides 30, 31 adapted thereto, which .are shaped as levers. The lever-shaped slides are, as is more particularly shown in Fig. 2, connected to each other in pairsl by means of toothed segments; they are so affected, on the one .hand by means of springs 34, 34a and on the other hand by eccentric tappets or disks 35 bearing elevations, that they pass alternately in pairs over the bottom of the box, turning down and pasting on the overlapping edges of' the paper-slip. Now, owing to the cam, 14, the piston with the work-piece is advanced farther. This passes in such a way across the first folding device into the matrix 39, contained in the shiftable cradle 29. The cradle has attached thereto a lsecond folding device coinposed oftwo pairs of levers 30a, 31a which swing in different planes and are to turn down inwardly the edges of thewpaper-slip projecting toward the inside, as shown in Fig., 3.4 Wh'en the work-piece has been conveyed by the piston into the matrix, the cradle is moved laterally in the direction of the arrow by means of-a crank 41. When now the cr'adle 29 hasnearly reached its iinal position, a rail 68, mounted at the cradle 29 so that it can be shifted, impinges upon an arm 66. Placed on the rail is a projection 67 acting directly on the pair of levers 30a connected with toothed segments, and indirectly on the pair 'of levers 31 through the medium of a pin 69. Thus the' lever-like shaped slides are connected with one another in such a way, that they are not coperating alternately in pairs but that they turn down simultaneously toward the inside all the four sides of the overlapping paper-slip returning then abruptly, this .being effected by the springs 34C. and 34a. After the edges of the paper-slip have thus been folded inward and partly around' the boxedge, they are by a spring-iniiuenced second vplunger 7 5 folded against the inner faces of the box, said plunger receiving movement from a rotative cani 77 or otherwise.

I claim 1. In a machine of the character described,

an'interniittently rotative frame, an inclosedl core rotatable therewith and axially dis placeable relatively thereto, said core being adapted to sustain a box, means for supplying a covering strip for said box right angles to the core axis, a roller thel `axis of which extends in parallelism with the core axis, a spring-influenced bent lever supporting the roller, a slide to which said lever is vpivoted, and means for reciprocating the slide at right angles to the core axis whereby the roller is caused to be reciproc'ated in parallelism with the direction of travel of the covering strip.

2. In a machine of the character described, an intermittently rotative frame, an inclosed core rotatable therewith and axially displaceabl'e relatively thereto, a relatively stationary first folding device in axial alinenient with the core, a displaceable second Afolding device back of the iiist folding device, a plunger, and means for bringing said second folding device in alternating axial alinement with said core and plunger.

3. In a machine of the character described,

means for providing a box with a covering strip that projects beyond the bottom and top thereof, a relatively stationary first folding device comprising consecutively actuated pairs of folding levers adapted to fold one of the projecting strip edges against the box bottom, a second folding device comprising simultaneously actuated pairs of folding levers adapted to fold the, other projecting strip edge into the open top of the box, and means for laterally displacing said second folding device,

4. In a. machine of the character described, means for providing a box with a coveringV strip that projects beyond the bottom and top thereof, a first folding device compris- -ing two pairsof operatively connected folding 4levers having stationary fulcrums, a second folding device comprising a slide and los two pairs of operatively connected folding leversfulcrumed to the slide, a rail movably supported bythe slide and adapted to en-y gage onc lever of the first folding device, an operative connection between the rail and one lever of the second folding device, yand a fixed abutment adapted to be engaged by the rail. ICHARD HOGFELDT. [1.. s]

Witnesses: Orro KNIG,

WALTER VONNGUT.

Gopies of this patent may be obtained for ve cents each, by addressing the Commissioner of Paten-tt.

Washington, D. C. 

